Light-emitting device and illumination device

Abstract

The invention relates to a light-emitting device (1) comprising: at least one LED chip (3) for generating primary light (P) with a primary spectrum; and at least one conversion component (Ki) for converting the primary light (P) into secondary light (Si) with a secondary spectrum that differs from the primary spectrum. The primary light (P) is emitted over a emission solid angle range (A) of the light-emitting device. The at least one conversion component (Ki) covers only a partial solid angle range (Ti) of the emission solid angle range (A), meaning that an emission spectrum of the light-emitting device (1) is dependent on the solid angle.

Description

[0001]Light-emitting device and lighting device. This patent application claims priority from German patent application DE 102023206082.5, the contents of which are incorporated herein by reference. The present invention relates to a light-emitting device, in particular an LED package. The invention also relates to a lighting device, in particular a luminaire and / or a lighting device for a projector, for example for a head-up display, a beamer, and / or data glasses, for example so-called smart glasses. Light-emitting devices, in particular LED packages, are known from public prior use.It is an object of the present invention to improve a light-emitting device, in particular to provide a light-emitting device that is particularly suitable for applications in which a direction-dependent radiation characteristic is desired, for example for ambient lighting. This object is achieved by a light-emitting device according to claim 1. The light-emitting device has at least one LED chip for generating primary light with a primary spectrum and at least one conversion component for converting the primary light into secondary light with a secondary spectrum that differs from the primary spectrum. The primary light is emitted by the LED chip over a radiation solid angle range of the light-emitting device.The at least one conversion component covers only a solid angle sub-range of the solid angle range of the emission, so that an emission spectrum of the light-emitting device is solid angle-dependent. The light-emitting device, also called a light emitter, is in particular an LED package. The light-emitting device advantageously allows solid angle-dependent emission characteristics to be achieved, in particular adjusted, flexibly and easily. The solid angle-dependent emission spectrum can in particular be generated without the need for multiple LED packages, in particular multiple LED chips, and a complicated arrangement thereof. As a result, the solid angle-dependent emission spectrum can be achieved with little space requirement and low material costs. In particular, with different colors depending on the solid angle, the light-emitting device is particularly suitable for ambient lighting.The emission spectrum is the spectrum of light emitted outward by the light-emitting device, in particular the LED package. The emission spectrum can be varied in different solid angle sub-ranges by means of the at least one conversion component. In solid angle sub-ranges without a conversion component, the emission spectrum can be dominated in particular by the primary spectrum. In a solid angle sub-range assigned to a conversion component, the emission spectrum is dominated in particular by the converted secondary spectrum. The emission spectrum differs from the emission spectrum of other solid angle sub-ranges in which other conversion components or no conversion components are arranged. Depending on the solid angle, either the primary light and / or the secondary light of one or more conversion components can be emitted.Advantageously, the solid angle-dependent emission spectrum enables solid angle-dependent colors of the emitted light, in particular solid angle-dependent color gradients. In different solid angle sub-ranges, respective colors and / or color transitions between different colors can be specifically generated. For example, light of different colors can be emitted in different spatial directions. For example, three or more different solid angle sub-ranges with different emission spectra can be provided, in particular three or more solid angle sub-ranges in which light of different colors is emitted. The more solid angle sub-ranges with different emission spectra are used, the more different colors can be generated. Preferably, there are at least as many different solid angle sub-ranges as different colors to be generated.Furthermore, the light-emitting device is particularly suitable for supplying different components, in particular other components of a lighting device, with light of different spectra, in particular different colors. In particular, the emission spectrum of different solid angle sub-ranges can be further modified and / or used independently of one another. For example, different mirrors, light guides and / or other optical components can be assigned to different solid angle sub-ranges, which deflect, forward, detect and / or otherwise process the respective emission spectrum. The emission spectrum is preferably in the visible wavelength range, in particular between 380 nm and 780 nm. The emission spectrum can also include parts of the infrared range and / or UV range, depending on the application.The secondary spectrum of the at least one conversion component covers at least partial ranges of the wavelength range covered by the emission spectrum. The primary spectrum can cover parts of the emission spectrum, in particular if no conversion component is arranged in individual solid angle partial ranges, so that the primary spectrum can contribute directly to the emission spectrum. The primary light can be visible light. The primary light can also have other wavelengths, in particular in the UV range. The primary light can in particular be selected such that it can be particularly well absorbed by the respective conversion components. The at least one conversion component comprises in particular at least one light-converting material.Different conversion components can in particular contain different light-converting materials and / or different concentrations of at least one light-converting material and / or different mixtures of light-converting materials. The conversion component, in particular the light-converting material contained therein, absorbs the primary light and emits the secondary light. Suitable conversion components in particular comprise light-converting material that exhibits luminescence, in particular photoluminescence, for example fluorescence or phosphorescence. Such materials are also referred to as phosphors. Suitable light-converting materials can be selected depending on the desired secondary spectrum. Examples of suitable phosphors are in particular: ^^^^^^^. ^ : ^^ ^^ , ( ^^, ^^ ) ^^^^^ ^ : ^^ ^^ , ^^ ^ ^ ^ : ^^^^ , ^^ ^ ^^ ^^^ ^^ ^ ^ ^ , ^^ ^^^ ^^ ^ ^^^ ^ , ^^^^^ ^ : P^ ^^ , ^^ ^^ , ^^ ^ ^^ ^ ^ ^ : ^^ ^^ , ^^^^ ^ ^ ^ : ^^ ^^ , ^^^^ ^ ^ ^ : ^^ ^^ , ^^^: ^^ ^^ , ^^ ^ ^^ ^ ^ ^^ : ^^ ^^ and / or ( ^^, ^ ) ^ ^^ ^ ^ ^^ : ^^ ^^Particularly suitable conversion components include light-converting material in the form of so-called quantum dots, for example cadmium-containing or cadmium-free quantum dots. Examples of suitable materials for the quantum dots are CdSe / ZnS, InP / ZnS, ZnSe / ZnS and / or perovskites, in particular CsPbX3, where X is selected from the group consisting of Cl, Br and / or I. Quantum dots are nanoparticles that exhibit different emission spectra depending on their diameter and / or starting material. The diameter can be, for example, between 1 nm and 20 nm, particularly for quantum dots based on CdSe. Depending on the size and / or starting material, the emission spectrum, in particular the maximum position and / or spectral width, can thus be easily and efficiently adjusted. By suitable mixtures of quantum dots of different diameters, the spectral width of the resulting secondary spectrum can be adjusted.The light-emitting device has at least one LED chip. The light-emitting device can also have a plurality of LED chips, for example two, three, four, five, or more LED chips. A light-emitting device according to claim 2 is particularly suitable for ambient lighting. Different color valences of different solid angle sub-ranges allow direction-dependent radiation of different colors and / or mixtures of these colors, for example in intermediate regions between the solid angle sub-ranges. In this way, particularly attractive color gradients and / or effects can be achieved. Different color valences are to be understood in particular such that the respective radiation spectrum has perceptually different colors for an observer, in particular different primary colors of a color system. Different color valences can be caused by different spectral gradients.In particular, the respective emission spectra can have different maximum and / or center wavelengths. Preferably, primary and secondary colors can be generated in different spatial directions, in particular, primary colors of different color systems. A light-emitting device according to claim 3 enables particularly flexible solid-angle-dependent emission spectra. The secondary spectra of different conversion components differ; in particular, they have different color valences. The secondary spectra can, in particular, have different maximum or center wavelengths. The secondary spectra can, in particular, cover different ranges of the emission spectrum. Multiple conversion components, in particular, enable a finer gradation of the differences in the emission spectrum in different solid-angle sub-ranges. The emission spectrum can be adjusted precisely and flexibly.In particular, it is possible to generate color gradients in the emission spectrum using multiple conversion components. For example, a light-emitting device can have at least three different solid angle sub-ranges. In each of the different solid angle sub-ranges, a primary color of a color system can preferably be emitted. For example, the primary light of the LED chip, preferably blue light, can be emitted in one solid angle sub-range, while green or red light is emitted in other solid angle sub-ranges via suitable conversion components. A light-emitting device according to claim 4 is flexible in use and structurally simple.The use of different light-converting materials and / or different concentrations of at least one light-converting material in different conversion components makes it possible to precisely adjust the conversion of the primary light into the respective secondary light depending on the application. For example, a color of the secondary light can be adjusted by selecting the light-converting medium. It is also possible to achieve different mixtures between primary light and secondary light using different concentrations of the light-converting material. It is also possible to mix different light-converting materials with respective concentrations to produce mixed colors. The light-converting materials can in particular be incorporated into an encapsulation of the at least one LED chip and / or into a coating of the at least one LED chip.This enables a particularly favorable arrangement of the light-converting materials, which also provides mechanical protection for the at least one LED chip. The light-emitting device can have a housing, in particular an encapsulation, which at least partially houses, in particular encapsulates, the at least one LED chip. The housing, in particular the encapsulation, is in particular optically transparent. Optically transparent is to be understood in particular such that the housing, in particular the encapsulation, is transmissive at least for light in the optical or visible wavelength range. A light-emitting device according to claim 5 is particularly robust. The at least one LED chip is reliably protected from external influences. For example, the encapsulation can be formed at least partially from optically transparent materials. An optically transparent encapsulation according to claim 6 has proven particularly successful.Optically transparent resins and glass are robust and exhibit good transmission in the optical wavelength range. Optically transparent resins, in particular, allow flexible shaping of the encapsulation. The encapsulation can comprise diffusers, for example diffuser particles. A light-emitting device according to claim 7 is particularly robust. The at least one conversion component is protected from external influences in the encapsulation. Preferably, all conversion components are embedded in the encapsulation. For example, light-converting material of the at least one conversion component, in particular different light-converting materials of different conversion components, can be embedded in the encapsulation. The light-converting material can be embedded in the encapsulation uniformly or with a locally varying concentration.The encapsulation advantageously enables simple and precise definition of different solid angle sub-ranges. A light-emitting device according to claim 8 is structurally simple and can be used flexibly. The at least one conversion component can be arranged on the respective LED chip in a space-saving manner. The definition of the solid angle sub-range can be easily and precisely determined by applying the coating to the corresponding surface areas of the LED chip. A light-emitting device according to claim 9 enables particularly precise adjustment of the solid angle-dependent emission spectrum. The optical separation, in particular shielding, of different solid angle sub-ranges ensures that the primary light and / or the secondary light of one solid angle sub-range cannot penetrate into another solid angle sub-range.This ensures a fixed assignment of the respective radiation spectrum to the solid angle sub-range. Scattered light, in particular scattered light with false colors from a different solid angle sub-range is avoided. The optical separation, in particular optical shielding, can be achieved in particular by means of apertures between the respective solid angle sub-ranges. Fascias can, for example, be incorporated into an encapsulation of the LED chip. The arrangement of the apertures is thereby ensured to be stable and reliable. The optical separation, in particular optical shielding, can additionally or alternatively be achieved by means of at least one lens which is arranged in such a way that it at least partially focuses light from one of the solid angle sub-ranges, for example onto a region of a surface coating of the at least one LED chip and / or an encapsulation in which the at least one conversion component is formed.Preferably, at least two lenses are provided which are arranged such that they at least partially focus light from respective solid angle sub-ranges. A light-emitting device according to claim 10 enables precise definition of different secondary spectra in different solid angle sub-ranges. The secondary spectra of the optically separated solid angle sub-ranges do not influence or interfere with each other. Preferably, apertures are provided between the solid angle sub-ranges for optically separating, in particular shielding, the respective solid angle sub-ranges. A light-emitting device according to claim 11 enables particularly flexible adjustment of the solid angle-dependent radiation characteristic. The at least two lenses can be formed, for example, by a housing for the LED chip. The housing can, in particular, form a multi-lens. Particularly preferably, one lens is provided for each solid angle sub-range.Advantageously, the lenses enable separation, in particular shielding, of the light components assigned to the respective solid angle sub-regions, without the need for diaphragms or other shielding. With the aid of the lenses, the light to be emitted can be additionally or alternatively adapted to the solid angle, not only in its emission spectrum but also in other properties, in particular in its intensity profile. In particular, the at least two lenses focus the light in such a way that light emanating from the respective surface sub-regions of the LED chip is deflected in different directions. This is particularly advantageous in combination with conversion components applied as a coating to the surface of the LED chip. A further object of the invention is to improve a lighting device. This object is achieved by a lighting device according to claim 12.The lighting device has at least one light-emitting device, in particular in the form of an LED package, as described above. The advantages and optional features of the light correspond to those of the device described above. The lighting device can in particular be a light, for example a light for ambient lighting. The lighting device can also be part of a projector, in particular for a head-up display, a beamer and / or data glasses. A lighting device according to claim 13 is particularly suitable as part of the projector. The mirror arrangement can in particular be a mirror array or micromirror array. The mirrors of the mirror arrangement, in particular micromirrors or MEMS mirrors, make it possible to redirect light components of different solid angle sub-ranges independently of one another.This allows the solid angle-dependent radiation spectra to be used flexibly and easily for other technical applications, particularly in a projector. Larger mirror arrays can be used in particular for stage lighting, for example, to create color mixtures and color gradients on the stage. The lighting device according to claim 14 is particularly suitable for use in a projector. Different colors emitted in the different solid angle sub-ranges can be redirected and / or superimposed independently of one another using the respective mirrors to generate an image. A lighting device according to claim 15 is particularly suitable for use in a projector.By generating different primary colors of one or more color systems, it is possible to create any colors that can be represented by the at least one color system by mixing them with the help of the mirrors. A lighting device according to claim 16 has a particularly large representable color range. The combination of at least two color systems, for example the RGB color system and the CMY color system, makes it possible to accurately represent colors in a large color range. The lighting device is suitable, for example, for high-quality luminaires, in particular for high-quality ambient lighting. In particular, particularly attractive color gradients and / or effects can be achieved using the primary colors of at least two color systems. Particularly preferably, the respective primary colors of the at least two color systems are assigned to the respective mirrors of a mirror arrangement.In this way, the lighting device can be used, for example, as part of a projector for high-quality reproduction of large color spaces. Further features, advantages, and details of the invention emerge from the following description of exemplary embodiments with reference to the figures. They show: Fig. 1 schematically a longitudinal section through an exemplary embodiment of a light-emitting device with a solid angle-dependent emission spectrum, Fig. 2 the dominant wavelength of the emission spectrum as a function of an angle in the sectional plane of Fig. 1, Fig. 3 schematically a longitudinal section through a further exemplary embodiment of a light-emitting device, Fig. 4 schematically a longitudinal section through a further exemplary embodiment of a light-emitting device, and Fig. 5 schematically an exemplary embodiment of a lighting device. Corresponding parts, components, spectra, and / or other variables are shown in Figs.1 to 5 are provided with the same reference numerals. Details of the exemplary embodiments explained in more detail below can also represent an invention in themselves or be part of a subject matter of the invention. Fig. 1 schematically shows a first exemplary embodiment of a light-emitting device 1 in the form of an LED package. The LED package 1 has a substrate 2 with an LED chip 3 arranged thereon. On the side facing away from the substrate 2, the LED chip 3 is housed in a housing 4. The housing 4 can in particular be designed in the form of an encapsulation. On the surface of the housing 4 facing away from the LED chip 3, a radiation surface 5 is formed, via which the LED package 1 emits light. In the exemplary embodiment shown, the LED chip 3 with the housing 4 is hemispherical. In the exemplary embodiment shown, the LED chip 3 with the housing 4 is hemispherical. The radiation surface 5 describes a hemispherical surface in the exemplary embodiment shown.Of course, other shapes of the emission surface are possible, in particular ellipsoids or complex lens structures. The LED chip 3 and the LED package 1 emit radiation over a emission solid angle range A that corresponds to the respective emission surface. In the illustrated embodiment, the emission solid angle range A corresponds to the hemisphere of the housing 4. In the illustrated embodiment, the emission solid angle range A therefore covers the entire solid angle above the substrate 2. The LED chip 3 generates primary light P with a primary spectrum and emits this over the entire emission solid angle range A. The emission solid angle range A is divided into solid angle sub-ranges T. iThe index i = 1, 2, ... denotes here and in the following various solid angle sub-ranges Ti and associated components, light spectra, and parameters. In the illustrated embodiment, three solid angle sub-ranges Ti are shown, namely T1, T2, and T3 (ie, i = 1, 2, 3). The solid angle sub-ranges T iare arranged rotationally symmetrically around a central axis 6. The solid angle sub-ranges Ti are optically separated from one another by apertures 7. The light emitted via the emission surface 5 has a solid angle-dependent emission spectrum. This is achieved by the use of conversion components Ki in different solid angle sub-ranges Ti. Light components Li with respective emission spectra are therefore assigned to the respective solid angle sub-ranges Ti. In the solid angle sub-range T1, the housing 4 is formed by an optically transmissive, in particular optically clear, encapsulation. In the solid angle sub-range T1, no conversion of the primary light P generated by the LED chip 3 takes place. The light component L1 therefore has a spectrum that corresponds to the primary spectrum of the primary light P. In the solid angle sub-ranges T2 and T3, respective conversion components K2 and K3 are arranged.The conversion components K2, K3 convert the primary light P into a secondary light S2 or S3. The respective secondary light Si has a secondary spectrum that differs from the primary spectrum of the LED chip 3. In addition, the secondary spectra of the secondary light S2 and the secondary light S3 differ. The conversion components K2 and K3 are formed by light-converting materials contained in the encapsulation. Different conversion components K1 have different light-converting materials and / or different concentrations and / or mixing ratios of one or more light-converting materials. In the exemplary embodiment shown, the conversion components K2 and K3 have different light-converting materials. The corresponding light components L2 and L3 are dominated by the respective secondary light S2 and S3, respectively. The emission spectra of the light components L. idiffer. In particular, the emission spectra have different color valences. This creates a solid angle-dependent color impression of the emitted light. In a concrete, purely exemplary embodiment, the LED chip 3 generates blue light, for example light with a dominant wavelength of 450 nm. The light component L1 therefore appears blue. The conversion component K2 converts the blue primary light P into green secondary light S2. The light component L2 therefore appears green. The conversion component K3 converts the blue primary light P into red secondary light S3. The light component L3 therefore appears green. The LED package 1 therefore emits the colors blue, green and red in different solid angle sub-ranges Ti. In a transition area between two adjacent solid angle sub-areas Ti and Tj (where in the embodiment shown j = 1, 2, 3 and j ≠ i) the emitted light components Li and Tj mix.Lj to mixed light components Lij, so that mixed colors also arise in corresponding intermediate areas. In Fig.1, the mixed light components L12 and L23 are shown as examples in the transition area between the solid angle sub-areas T1 and T2 or T2 and T3. An example radiation characteristic is explained in more detail with reference to Fig.2. In Fig.2, the dominant wavelength λ is shown over a projection angle r of the solid angle in the sectional plane of Fig.1. The angle r is measured from the central axis 6. This results in a continuous color gradient from blue light along the central axis 6 to red light perpendicular to the central axis 6. The LED package 1 can be used, for example, in a lighting device, in particular in luminaires, in particular for ambient lighting.The solid angle-dependent emission characteristic can also be used in technical applications, for example when different spectra, in particular different colors, are advantageous for irradiating different (optical) components. With reference to Fig. 3, a further embodiment of a light-emitting device 1a in the form of an LED package is shown. Components that have already been described with reference to the embodiment in Fig. 1 have the same reference numerals and will not be explained in detail again. Functionally corresponding, but structurally differently designed components have corresponding reference numerals supplemented by "a". The LED package 1a has a housing 4a which, apart from the apertures 7, forms an optically transmissive, for example an optically clear, encapsulation. The conversion components Ka2 and Ka3 are in the respective solid angle sub-ranges T2 and T3 respectively.T3 as coatings containing the respective light-converting material are applied directly to the LED chip 3. Fig. 4 schematically shows a further embodiment of a light-emitting device 1b in the form of an LED package. Components that were described with reference to the preceding embodiments bear the same reference numerals and will not be explained in detail again. Functionally corresponding, but structurally differently designed components bear corresponding reference numerals supplemented by "b". In the LED package 1b, the conversion components Ka2, Ka3 are in turn formed by coatings on the LED chip 3. The housing 4b has lenses Fi assigned to the respective solid angle sub-regions Ti, i.e., in the specific embodiment, the lenses F1, F2 and F3. The housing 4b, for example in the form of an encapsulation, and its radiating surface 5b forms a multi-lens.The lenses Fi have respective focal lengths fi. The arrangement of the lenses Fi is selected such that light rays emerging in the respective solid angle sub-ranges Ti are bundled onto corresponding surface areas of the LED chip 3. This enables a separation of the respective light components Li without the need for diaphragms or other shielding. Optionally, a radiation pattern, in particular a radiation intensity, can also be influenced with the help of the lenses Fi. The housing 4b in the form of a multi-lens can be easily applied to the substrate 2 and the LED chip 3 during production. The separate production of the housing for different solid angle sub-ranges, for example by applying a diaphragm structure and filling the gaps, is avoided. Fig. 5 shows an embodiment of a lighting device 10.The lighting device 10 can, for example, be part of a projector, in particular for a head-up display and / or for data glasses. The lighting device 10 has a plurality of LED packages 11 which have a solid angle-dependent emission spectrum implemented according to the principle described above. In the LED packages 11, two solid angle sub-ranges T1, T2 are formed, the light components of which have emission spectra of different color valences. In the exemplary embodiment shown, three LED packages 11 are shown. The three LED packages 11 each serve to emit three primary colors of two different color systems. In other lighting devices not shown in the figures, a plurality of LED packages 11 may be present. In particular, a plurality of groups of LED packages 11 may be present, each emitting the corresponding primary colors of the two color systems.The various LED packages 11 emit a different primary color of a first color system in one of the respective solid angle sub-ranges T1. In other solid angle sub-ranges T2, the various LED packages 11 emit different primary colors of a second color system. In the exemplary embodiment shown, the LED packages 11 emit the primary colors of the RGB color system and the CMY color system, i.e., blue, green, and red, or cyan, magenta, and yellow. The LED package 11 shown on the left in Fig. 5, for example, emits the primary colors blue (B) and cyan (C) of the respective color systems, the middle LED package 11 the primary colors green (G) and yellow (Y), and the right LED package 11 the primary colors red (R) and magenta (M). Other combinations and / or assignments of the primary colors to the LED packages 11 are of course possible. The generation of the primary colors red (R) and magenta (M) in the right LED package 11 is explained purely as an example.The LED chip generates blue primary light. In the solid angle sub-range T2, there is a low concentration of light-converting material for converting the blue primary light into red light. The mixture of the blue primary light and the converted red light produces magenta (M). In the solid angle sub-range T1, the light-converting material is present in high concentration for completely converting the blue primary light into red light. The use of two color systems has the advantage that a larger color space can be covered with the illumination device 10. With the help of the LED packages 11, the number of LED packages 11 required for this purpose and thus the cost can be reduced. The illumination device 10 has a mirror arrangement 12 in the form of a micromirror array (MEMS mirror array). Each LED package 11 has two mirrors M1, M2, which are assigned to the respective solid angle sub-ranges T1 and T2, respectively.With the help of the mirrors Mi, the light components of the solid angle sub-regions Ti, which correspond, for example, to the respective primary colors of two color systems, can be redirected independently of one another. This allows the individual primary colors to be controlled independently of one another in order to achieve a desired color mixture. Fig. 5 shows a micromirror array, for example for use in a projector, in particular in a head-up display. In other exemplary embodiments, a mirror array can be provided for structurally larger applications. For example, a corresponding lighting device can be used for stage lighting, in particular to create color mixtures and color gradients for stage lighting in a simple and precise manner.

Claims

1. Light-emitting device, in particular LED package, comprising - at least one LED chip (3) for generating primary light (P) with a primary spectrum, wherein the primary light (P) is emitted over a radiation solid angle range (A) of the light-emitting device (1; 1a; 1b; 11), and - at least one conversion component (Ki; Kai) for converting the primary light (P) into a secondary light (S i) with a secondary spectrum that differs from the primary spectrum, wherein the at least one conversion component (Ki; Kai) covers only a solid angle sub-range (Ti) of the emission solid angle range (A), so that an emission spectrum of the light-emitting device (1; 1a; 1b; 11) is solid angle-dependent.

2. Light-emitting device according to claim 1, characterized in that the emission spectrum has different color valences in different solid angle sub-ranges (Ti).

3. Light-emitting device according to one of the preceding claims, characterized by at least two conversion components (K i ; Ka i ), which cover different solid angle sub-ranges (Ti) of the radiation solid angle range (A) and whose secondary spectra differ, in particular have different color valences.

4. Light-emitting device according to claim 3, characterized in that different conversion components (K i ; Ka i) have different light-converting materials and / or different concentrations of at least one light-converting material.

5. Light-emitting device according to one of the preceding claims, characterized by an optically transmissive encapsulation in which the at least one LED chip (3) is at least partially encapsulated.

6. Light-emitting device according to claim 5, characterized in that the optically transmissive encapsulation is made of glass and / or an optically transparent resin, in particular silicone resin and / or epoxy resin.

7. Light-emitting device according to claim 5 or 6, characterized in that the at least one conversion component (Ki; Kai) is embedded in the encapsulation of the at least one LED chip (3).Light-emitting device according to one of the preceding claims, characterized in that the at least one conversion component (Ki; Kai) is applied as a coating to a partial area of ​​a surface of the at least one LED chip (3).

9. Light-emitting device according to one of the preceding claims, characterized in that different solid angle sub-ranges (T i ) of the emission solid angle range (A), are optically separated from one another, in particular optically shielded.

10. Light-emitting device according to one of the preceding claims, characterized by at least one diaphragm (7) which is arranged between two solid angle partial ranges (T i) is arranged for optical separation, in particular optical shielding, of the two solid angle sub-ranges (Ti).

11. Light-emitting device according to one of the preceding claims, in particular according to claim 8, characterized by at least two lenses (Fi) which are arranged such that they at least partially bundle light from respective solid angle sub-ranges (Ti).

12. Lighting device with at least one light-emitting device (11) according to one of the preceding claims.

13. Lighting device according to claim 12, characterized by a mirror arrangement (12), in particular a micro-glass array, wherein at least two mirrors (Mi) are assigned to different solid angle sub-ranges (T i ) of the radiation solid angle (A) with a different radiation spectrum are assigned to one of the at least one light-emitting device (11).

14. Lighting device according to claim 13, characterized in that that the at least one light-emitting device (11) has a radiation spectrum with different color valences in solid angle sub-regions (T), to which different mirrors (Mi) are respectively assigned.

15. Lighting device according to claim 14, characterized in that the color valences of the different solid angle sub-regions (Tai) correspond to different primary colors (R, G, B, C, M, Y) of one or more color systems.

16. Lighting device according to one of claims 12 to 15, characterized by a plurality of light-emitting devices (11) for generating the primary colors (R, G, B, C, M, Y) of at least two color systems.

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